Microsoft Lumia 535 Win10 update sim/memory card error.

Hey guys. So I have Microsoft Lumia 535 and now I am updating to Windows 10. So the preparation progress was alright, everything was going smooth. When the preparation was over, it restarted and started installing. So here is the problem - it shows those gears and some sort of sim/memory card with an "x" and its stuck like this for a half an hour. Any help?